Automotive Technology
7th Edition
ISBN: 9781337794213
Author: ERJAVEC, Jack.
Publisher: Cengage,
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Textbook Question
Chapter 33, Problem 12SA
Rather then rely on the AIR system for extra oxygen in a TWC, what do most late model vehicles do to support the oxidation process?
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Chapter 33 Solutions
Automotive Technology
Ch. 33 - Explain why a small PCV valve opening is adequate...Ch. 33 - At what temperature do nitrogen atoms combine with...Ch. 33 - Describe the operation of a digital EGR valve.Ch. 33 - Name the three types of emissions being controlled...Ch. 33 - The PCV system prevents from escaping to the...Ch. 33 - In a negative backpressure EGR valve, if the...Ch. 33 - Describe how a selective catalytic reduction...Ch. 33 - HC emissions may come from the tailpipe or...Ch. 33 - What types of catalyst are typically used to...Ch. 33 - Why is a PCV system critical to an engines...
Ch. 33 - What is a catalyst?Ch. 33 - Rather then rely on the AIR system for extra...Ch. 33 - Why do the EGR systems on many late-model diesel...Ch. 33 - Which of the following systems is designed to...Ch. 33 - Which of the following statements about carbon...Ch. 33 - While discussing PCV valve operation: Technician A...Ch. 33 - While discussing EGR systems with a differential...Ch. 33 - While discussing evaporative (EVAP) systems:...Ch. 33 - Technician A says that an EGR valve that is stuck...Ch. 33 - While discussing SCR systems: Technician A says...Ch. 33 - While discussing automotive emissions: Technician...Ch. 33 - Technician A says that during oxidation, as NOx...Ch. 33 - While discussing PCV systems without a PCV valve:...Ch. 33 - While diagnosing the cause of high HC and O2...Ch. 33 - While discussing electric exhaust gas...
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- Increasing engine speed will decrease the engine knocking tendency because: Select one: Combustion speed will increase due to higher air speed inside the combustion chamber O b All of the choices Oc Intake pressure will decrease due to lower volumetric efficiency Od Duration of engine reactions will decreasearrow_forward(EVAP) operates with fuel anifold near each alve? ct to the stoichio- rottle, cruise con- conditions when ht cruising. ditions when full tic converter. is the least risky wes and runners, embling it, and g a crushed wal- n sing a chemical so it can be re- ump volume? lieve the static g the fuel lines pump fuse and 10. An inject stricted with deposits can be done using a(n): oscilloscope. pulse tool. digital multimeter. fuel line release tool. d. Questions ASE Technician A/Technician B Style 1. Tech A says that most electric fuel pumps are now mounted inside of the fuel tank. Tech B says that fuel flows through the center of the electric pump and is used to cool the pump. Who is correct? aTech A b. Tech B Both A and B d. Neither A nor B that has a bleed sing the excess tool to release In and drop test to see if the injector is re- 2. Tech A says that the stoichiometric ratio is 14.7 gallons of air to 1 gallon of fuel. Tech B says it is 14.7 lbs of air to 1 lb of fuel. Who is correct? a.…arrow_forwardWhat are the major pollutants from the exhaust of SI and CI engines.arrow_forward
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